Dialogic 6.2 manual Stream, T1/E1 span, Time slot, Unit number, Work channel

Stream	A logical data entity that corresponds to a physical data line on a
	TDM bus.
T1/E1 span	The set of slots that comprises one T1 (24) or one E1 (30) line. The
	spans are numbered starting at 1.
TCP	Transmission Control Protocol
Time slot	A logical entity that corresponds to one telephone call.
Unit number	1. In telephony configuration files and functions, a unit is a
	hardware port on a Brooktrout board and is numbered starting at 0
	(to denote a TDM bus); from 1 to n (for a specific T1/E1 interface).
	2. In some Bfv functions (e.g., BfvLineAttach), an ordinal channel
	number. Its range is 0...n-1, where n is the number of channels in a
	system.
VAD	Voice Activity Detection
Work channel	One of the channels on a module that is available for
	non-administrative purposes as a result of downloading firmware. A
	module configured for 48 channels when firmware download is
	performed has 48 work channels and one administrative channel.
	Logical work channel numbers start at 2 on each module.

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